Full list of all 27 Duke Nukem 3D: 20th Anniversary World Tour achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Find Luke in the Level "Lunar Reactor".
Kill 10 bad guys in 10 seconds while on steroids.
Complete "Alien World Order" on any difficulty.
Find Sam in "Mirage Barrage".
Burn 50 bad guys to death.
Kill a Firefly Trooper while it's flying small.
Use the Incinerator
Step on 40 enemies after using the Shrinker on them.
Carry all weapons with ammo at once.
Listen to Developer Commentary (Use at least one trigger).
Use a cheat code.
Finish any level on "Damn, I'm Good" difficulty.
Use the hookah in High Times.
Complete "The Birth" on any difficulty.
Complete "Shrapnel City" on any difficulty.
Step in a pile of excrement.
Kill 1000 enemies.
Complete "Lunar Apocalypse" on any difficulty.
Kill 5 bad guys with one shot.
Find 70 secret areas.
Complete "L.A. Meltdown" on any difficulty.
Find any secret level.
Find the Doomguy in the Level "Death Row".
Tip an exotic dancer.
Kill every enemy on a level.
Finish the "Hollywood Holocaust" level in under 3 minutes.
Find a secret area.